bool down = false;
        private void button10_MouseMove(object sender, MouseEventArgs e)
        {
            if (!down) return;
            Point p = button10.PointToScreen(button10.Location);
            Point p1 = button10.PointToScreen(e.Location);
            button10.Left = button10.Left + (p1.X - p.X);
            button10.Top = button10.Top + (p1.Y - p.Y);
            this.Update();
        }

        private void button10_MouseDown(object sender, MouseEventArgs e)
        {
            down = true;
        }

        private void button10_MouseUp(object sender, MouseEventArgs e)
        {
            down = false;
        }

------解决方案--------------------
C# code

 // C#鼠标拖动任意控件
Point p = new Point(0, 0);
        //利用Windows的API函数：SendMessage 和 ReleaseCapture 
        const uint WM_SYSCOMMAND = 0x0112;
        const uint SC_MOVE = 0xF010;
        const uint HTCAPTION = 0x0002;

        [DllImport("user32.dll", EntryPoint = "SendMessageA")]
        private static extern int SendMessage(IntPtr hwnd, uint wMsg, uint wParam, uint lParam);
        [DllImport("user32.dll")]
        private static extern int ReleaseCapture();
public void MouseDown(object sender, MouseEventArgs e)
        {
                Button bt = sender as Button;
                ReleaseCapture();
                SendMessage((sender as Control).Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);}
public void bt_MouseMove(object sender, MouseEventArgs e)
        {
            
            Button bt = sender as Button;
            if (e.Button == MouseButtons.Left)
            {
                bt.Location = new Point(bt.Left + e.X - p.X, bt.Top + e.Y - p.Y);
            }
        }

------解决方案--------------------

创建一个panel，两个button（button的移动类似）
C# code

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace 实现panel的拖动和缩放
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        Point p = new Point(0, 0);//定义一个点
        //并为控件 添加 MouseDown 事件

        // C#鼠标拖动任意控件

        //利用Windows的API函数：SendMessage 和 ReleaseCapture 
        const uint WM_SYSCOMMAND = 0x0112;
        const uint SC_MOVE = 0xF010;
        const uint HTCAPTION = 0x0002;

        [DllImport("user32.dll", EntryPoint = "SendMessageA")]
        private static extern int SendMessage(IntPtr hwnd, uint wMsg, uint wParam, uint lParam);
        [DllImport("user32.dll")]
        private static extern int ReleaseCapture();

        int xx = 0;
        private void addpanel_Click(object sender, EventArgs e)
        {//创建panel
            xx++;
            CreateControls.CreatePanel(backpanel, xx.ToString(), panel_MouseMove, panel_MouseDown, panel_Paint);
        }

        public void panel_Paint(object sender, PaintEventArgs e)
        {
            Panel panel = sender as Panel;
            ControlPaint.DrawBorder(e.Graphics,